N910 note 4 dead tryed to repair failed need help

Hi my friend, i have a n910 whit water damage, the phone was dead…
Before every repair test i get this value

When i buy, connected to power supply 0.00 A pushing power button 0.00 A

Changed the big power ic i get 0.00 A pushing power button 0.10A but when release return to 0.00A

Changed MPB01 (small power supply) and small power ic ( max77843 ) when connected get 0.01A when push button and stay pushed 0.94A when release return to 0.01A

Can anyone help me?